PMID- 19225832 OWN - NLM STAT- MEDLINE DCOM- 20090625 LR - 20211020 IS - 0364-2313 (Print) IS - 0364-2313 (Linking) VI - 33 IP - 5 DP - 2009 May TI - Lymphatic invasion: an important prognostic factor for stages T1b-T3 gallbladder cancer and an indication for additional radical resection of incidental gallbladder cancer. PG - 1035-41 LID - 10.1007/s00268-009-9950-4 [doi] AB - BACKGROUND: Laparoscopic cholecystectomy is being performed with increasing frequency worldwide. This has led to more frequent discovery of incidental gallbladder cancer (IGBC) and in turn to the need for an independent prognostic factor for stages T1b-T3 gallbladder cancer so that is can be determined clinically which cases of IGBC are indicated for additional radical resection (ARR). METHODS: A retrospective study was conducted that included 72 patients who underwent macroscopically curative surgical resection (R0, R1) at our center for stages T1b-T3 GBC. Survival analysis was performed, and the usefulness of ARR was analyzed in 15 patients with IGBC. RESULTS: Univariate analysis of disease-specific survival showed stage T3, histologic grade II-IV, lymphatic invasion, vessel invasion, perineural invasion, lymph node metastasis, and a positive resection margin to be factors indicative of poor prognosis. Independent predictors of poor disease-specific survival were stage T3 (hazard ratio, 2.33 [95% CI, 1.10-4.95]), lymphatic invasion (5.97 [1.29-27.6]), and a positive resection margin (3.17 [1.51-6.63]). Among the 15 IGBC patients, 4 of 5 patients without lymphatic invasion were cured, 2 of whom underwent cholecystectomy alone; 4 of 10 patients with lymphatic invasion did not undergo ARR, and the cancer recurred in all 4 patients; the other 6 patients underwent ARR, and 4 of them were cured by reoperation. CONCLUSIONS: Lymphatic invasion well reflects the malignant phenotype of stages T1b-T3 GBC. We advocate ARR for IGBC patients with lymphatic invasion. FAU - Shibata, Kohei AU - Shibata K AD - Department of Surgery I, Oita University Faculty of Medicine, 1-1 Hasama-machi Yufu, Oita 879-5593, Japan. shibatakohei@med.oita-u.ac.jp FAU - Uchida, Hiroki AU - Uchida H FAU - Iwaki, Kentaro AU - Iwaki K FAU - Kai, Seiichiro AU - Kai S FAU - Ohta, Masayuki AU - Ohta M FAU - Kitano, Seigo AU - Kitano S LA - eng PT - Journal Article PL - United States TA - World J Surg JT - World journal of surgery JID - 7704052 SB - IM MH - Adult MH - Aged MH - Aged, 80 and over MH - Female MH - Gallbladder/pathology/surgery MH - Gallbladder Neoplasms/diagnosis/*pathology/*surgery MH - Humans MH - *Incidental Findings MH - Lymphatic Metastasis MH - Male MH - Middle Aged MH - Neoplasm Recurrence, Local MH - Neoplasm Staging MH - Prognosis MH - Reoperation MH - Retrospective Studies MH - Survival Analysis EDAT- 2009/02/20 09:00 MHDA- 2009/06/26 09:00 CRDT- 2009/02/20 09:00 PHST- 2009/02/20 09:00 [entrez] PHST- 2009/02/20 09:00 [pubmed] PHST- 2009/06/26 09:00 [medline] AID - 10.1007/s00268-009-9950-4 [doi] PST - ppublish SO - World J Surg. 2009 May;33(5):1035-41. doi: 10.1007/s00268-009-9950-4.